Current Conditions

Thornhill, Ontario

71°F22°C
Partly Cloudy

Wind

NW 3 mph4 km/h

Humidity

65%

Cloud Cover

42%

As of Monday, September 7, 2026 at 9:48 AM EDT

Today's Outlook

Day

Mostly cloudy and warm, with a high of 74°F24°C and morning low of 59°F15°C. Light wind from the WNW around 3 mph5 km/h.

Night

Partly cloudy, with a low around 63°F17°C. Light wind from the W around 3 mph5 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
Partly CloudyHigh 74°F24°CLow 59°F15°CPrecip 0 in0 mmCloud 54%Wind WNW 3 mph5 km/hMonday: Mostly cloudy and warm, with a high of 74°F24°C and morning low of 59°F15°C. Light wind from the WNW around 3 mph5 km/h. Monday Night: Partly cloudy, with a low around 63°F17°C. Light wind from the W around 3 mph5 km/h.
CloudyHigh 74°F23°CLow 59°F15°CPrecip 0 in0 mmCloud 92%Wind ESE 5 mph7 km/hTuesday: Overcast and warm, with a high of 74°F23°C and morning low of 60°F16°C. Breezy from the SE at 4 to 7 mph7 to 11 km/h. Tuesday Night: Overcast, with a low around 59°F15°C. Light wind from the E around 5 mph8 km/h.
Light RainHigh 75°F24°CLow 65°F19°CPrecip 0.32 in8.1 mm79%Cloud 92%Wind SW 9 mph15 km/hWednesday: Overcast and warm, with a high of 75°F24°C and morning low of 68°F20°C. Breezy from the SW at 10 to 13 mph17 to 21 km/h. 79% chance of light rain throughout the day. Humid. Wednesday Night: Overcast, with a low around 65°F19°C. Breezy from the SW at 8 to 12 mph13 to 19 km/h. 57% chance of light rain throughout the night.
Partly CloudyHigh 73°F23°CLow 59°F15°CPrecip 0.01 in0.2 mm7%Cloud 56%Wind WNW 10 mph15 km/hThursday: Mostly cloudy and warm, with a high of 73°F23°C and morning low of 64°F18°C. Breezy from the WNW at 11 to 12 mph17 to 20 km/h. Thursday Night: Partly cloudy, with a low around 59°F15°C. Breezy from the WNW at 8 to 10 mph14 to 16 km/h.
ClearHigh 72°F22°CLow 53°F12°CPrecip 0 in0 mmCloud 14%Wind WSW 6 mph9 km/hFriday: Mostly clear and warm, with a high of 72°F22°C and morning low of 54°F12°C. Light wind from the W around 5 mph8 km/h. Friday Night: Mostly clear, with a low around 53°F12°C. Breezy from the SW at 7 mph11 km/h.
DrizzleHigh 76°F25°CLow 57°F14°CPrecip 0.03 in0.7 mm19%Cloud 47%Wind SSW 8 mph13 km/hSaturday: Mostly cloudy and warm, with a high of 76°F25°C and morning low of 60°F15°C. Breezy from the S at 9 to 11 mph15 to 18 km/h. Saturday Night: Partly cloudy, with a low around 57°F14°C. Breezy from the SSW at 7 to 9 mph12 to 14 km/h. 19% chance of drizzle in the evening.
DrizzleHigh 73°F23°CLow 60°F16°CPrecip 0.1 in2.6 mm22%Cloud 55%Wind WNW 8 mph13 km/hSunday: Mostly cloudy and warm, with a high of 73°F23°C and morning low of 63°F17°C. Breezy from the W at 8 to 10 mph13 to 16 km/h. 19% chance of drizzle throughout the day. Sunday Night: Mostly cloudy, with a low around 60°F16°C. Breezy from the WNW at 8 to 9 mph13 to 14 km/h. 22% chance of drizzle throughout the night.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
MondaySep 774°F24°C59°F15°C0 in0 mm· —54%Partly CloudyWNW 3 mph5 km/h
TuesdaySep 874°F23°C59°F15°C0 in0 mm· —92%CloudyESE 5 mph7 km/h
WednesdaySep 975°F24°C65°F19°C0.32 in8.1 mm· 79%92%Light RainSW 9 mph15 km/h
ThursdaySep 1073°F23°C59°F15°C0.01 in0.2 mm· 7%56%Partly CloudyWNW 10 mph15 km/h
FridaySep 1172°F22°C53°F12°C0 in0 mm· —14%ClearWSW 6 mph9 km/h
SaturdaySep 1276°F25°C57°F14°C0.03 in0.7 mm· 19%47%DrizzleSSW 8 mph13 km/h
SundaySep 1373°F23°C60°F16°C0.1 in2.6 mm· 22%55%DrizzleWNW 8 mph13 km/h
MondaySep 1467°F20°C56°F14°C0.09 in2.4 mm· 16%55%DrizzleNNW 8 mph13 km/h
TuesdaySep 1569°F21°C56°F13°C0.18 in4.5 mm· 21%63%ShowersS 9 mph14 km/h
WednesdaySep 1670°F21°C59°F15°C0.11 in2.7 mm· 21%63%ShowersSSW 8 mph13 km/h
ThursdaySep 1769°F21°C59°F15°C0.11 in2.9 mm· 22%64%DrizzleW 8 mph13 km/h
FridaySep 1867°F20°C57°F14°C0.13 in3.4 mm· 22%57%ShowersNW 8 mph13 km/h
SaturdaySep 1966°F19°C54°F12°C0.09 in2.2 mm· 19%56%DrizzleWNW 8 mph13 km/h
SundaySep 2065°F19°C54°F12°C0.09 in2.3 mm· 16%56%DrizzleWNW 8 mph13 km/h
MondaySep 2163°F17°C52°F11°C0.11 in2.9 mm· 16%59%DrizzleNNW 8 mph13 km/h

Nearby Cities

About This Forecast

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Coordinates: 43.8150°N, 79.4242°W·Elevation: 175m·Timezone: America/Toronto·Population: 115,292